A

On the TSW card to be replaced, set the MB switch UP.

Extract the TSW card to be replaced from the TSWM.

Set the keys on the new card, referring to the card replaced.

Set TSW MBR and MB keys on the new card UP.

Insert the new TSW card into the TSWM.

Confirm M0SY, M1SY, M2SY, and M3SY LEDs on the new card are all green.

B

UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE

ATTENTION

Contents

Static Sensitive

Handling

Precautions Required

TSW ACT lamp on the TSW card is red.

TSW ACT lamp on the new card is red.

NDA-24300CHAPTER 4

Page 275

Issue 1

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NEC NDA-24300 manual UNIT/CIRCUIT Card Replacement Procedure